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3 years ago

What is the net force on this object?

Physics

2 answers:

Andrew [12]3 years ago

8 0

22 newtons is the net force

zheka24 [161]3 years ago

8 0

8 Newton’s is the net force because normal and gravity cancel each other. The applied is more than friction, 8 N more. So the body moves with a net force of 8 N

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A soap bubble, when illuminated with light of frequency 5.27 Hz × 1014 Hz, appears to be especially reflective. If it is surroun

denis23 [38]

Answer:

$1.07004\times 10^{-7}\ m$

Explanation:

$n_s$ = Refractive index of bubble = 1.33

f = Frequency of light = $5.27\times 10^{14}\ Hz$

c = Speed of light = $3\times 10^8\ m/s$

The wavelength of light is given by

$\lambda=\dfrac{2n_st}{m-\dfrac{1}{2}}$

Wavelength is also given by

$\lambda=\dfrac{c}{f}$

m = 1 for minimum thickness

$\dfrac{c}{f}=\dfrac{2n_st}{m-\dfrac{1}{2}}\\\Rightarrow t=\dfrac{m-\dfrac{1}{2}c}{2n_sf}\\\Rightarrow t=\dfrac{(1-\dfrac{1}{2})\times 3\times 10^8}{2\times 1.33\times 5.27\times 10^{14}}\\\Rightarrow t=1.07004\times 10^{-7}\ m$

The minimum thickness is $1.07004\times 10^{-7}\ m$

4 0

3 years ago

If you pull on a box with a force of 5 N and your teacher pulls on the same box with a force of 5 N in the opposite direction, t

antiseptic1488 [7]

Answer:

A. 0N

Explanation:

assume you're pulling in the positive direction, then we have 5 + (-5) = netforce = 0N

6 0

2 years ago

Select the appropriate units for each property of a wave.

IceJOKER [234]

Intensity: Decibels

Amplitude: Meters

Frequency: Hertz

<u>Explanation:</u>

The Wave is not visible to eyes and they can easily propagate through vacuum. the average power travelling at a given period of time in a space is the intensity. Decibels is the measure of intensity. it is measured in the decibel scale. The wave's strength and the intensity gives the amplitude of wave. It is measured using meters.

The wave's amplitude and the energy has a direct proportionality. The number occurrence of wave cycles per second refers to the frequency of wave. it is measured in hertz. it is also measured as the number of cycles that occurs per second.

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3 years ago

Which of the following is true of the planet jupiter

shtirl [24]

Jupiter is the fifth planet from the Sun and the largest in the Solar System. It is a giant planet with a mass one-thousandth that of the Sun, but two and a half times that of all the other planets in the Solar System combined.

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4 years ago

the wires inside a cable each have there own plastic insulation .why does the insulasion have diffrent colours

marta [7]

A cable is a bundle of two wires or three wires or a thousand wires,
inside a single 'tube'. In order for the cable to be useful, you need to
be able to match each wire at one end of the cable to the same wire
at the other end. If each wire has a different physical appearance,
then it's easy.

6 0

4 years ago